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__attribute__((aligned)) variable attribute

The aligned variable attribute specifies a minimum alignment for the variable or structure field, measured in bytes.


This variable attribute is a GNU compiler extension that the ARM compiler supports.

/* Aligns on 16-byte boundary */
int x __attribute__((aligned (16)));
/* In this case, the alignment used is the maximum alignment for a scalar data type. For ARM, this is 8 bytes. */
short my_array[3] __attribute__((aligned));